The general rule is that you can keep your license, registration, and insurance in the state you have listed as your permanent residence. If you intend to return to Colorado after your travels and not establish residency in another state, then it makes sense to keep your car insurance, registration, and license in that state.
Car insurance follows the vehicle from state-to-state, so you’ll be covered anywhere you go. If you have liability only, it might be worth adding extra coverage for more protection, especially since you’ll be driving more. You might also want to add roadside assistance for any car misshaps you could need help with.